"Unctuousnesses" refer to excessive or insincere flattery that is often seen as manipulative behavior. Antonyms for unctuousnesses would include sincerity, honesty, modesty, candor, and straightforwardness. These words imply a genuine and authentic approach to communication, with no hidden agendas or ulterior motives. Being sincere means expressing honest and heartfelt thoughts and feelings instead of using false flattery to achieve personal gain. Honesty suggests being truthful and forthright in one's words and actions, even if it means admitting one's own mistakes or shortcomings. Modesty involves being humble and unassuming, without seeking attention or praise from others. Candor and straightforwardness mean being frank and direct in one's communication, without resorting to vague or ambiguous language.